Robert Ludlum's The Bourne Sanction (Bourne Series #6)

Jason Bourne returns to Georgetown University and the mild world of his alter ego, David Webb, hoping for normalcy. But after so many adrenaline-soaked years of risking his life, Bourne finds himself chafing under the quiet life of a linguistics professor.

Aware of his frustrations, his academic mentor, Professor Specter, asks for help investigating the murder of a former student by a previously unknown Muslim extremist sect. The young man died carrying information about the group's ter…